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137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/******************************************************************************
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Copyright 2008, Freie Universitaet Berlin (FUB). All rights reserved.
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These sources were developed at the Freie Universitaet Berlin, Computer Systems
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and Telematics group (http://cst.mi.fu-berlin.de).
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-------------------------------------------------------------------------------
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This file is part of FeuerWare.
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This program is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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FeuerWare is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see http://www.gnu.org/licenses/ .
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--------------------------------------------------------------------------------
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For further information and questions please use the web site
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http://scatterweb.mi.fu-berlin.de
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and the mailinglist (subscription via web site)
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scatterweb@lists.spline.inf.fu-berlin.de
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*******************************************************************************/
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/**
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* @ingroup dev_cc110x
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* @{
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*/
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/**
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* @file
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* @internal
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* @brief TI Chipcon CC1100 SPI driver
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*
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* @author Freie Universität Berlin, Computer Systems & Telematics, FeuerWhere project
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* @author Thomas Hillebrandt <hillebra@inf.fu-berlin.de>
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* @author Heiko Will <hwill@inf.fu-berlin.de>
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* @version $Revision: 1775 $
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*
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* @note $Id: cc1100_spi.c 1775 2010-01-26 09:37:03Z hillebra $
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*/
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#include <stdio.h>
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#include "irq.h"
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#include "arch_cc1100.h"
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#include "cc1100.h"
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#include "cc1100_spi.h"
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#include "cc1100-internal.h"
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/*---------------------------------------------------------------------------*/
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// CC1100 SPI access
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/*---------------------------------------------------------------------------*/
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#define NOBYTE 0xFF
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uint8_t
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cc1100_spi_writeburst_reg(uint8_t addr, char *src, uint8_t count)
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{
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int i = 0;
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unsigned int cpsr = disableIRQ();
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cc1100_spi_select();
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cc1100_txrx(addr | CC1100_WRITE_BURST);
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while (i < count) {
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cc1100_txrx(src[i]);
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i++;
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}
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cc1100_spi_unselect();
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restoreIRQ(cpsr);
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return count;
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}
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void
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cc1100_spi_readburst_reg(uint8_t addr, char *buffer, uint8_t count)
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{
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int i = 0;
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unsigned int cpsr = disableIRQ();
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cc1100_spi_select();
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cc1100_txrx(addr | CC1100_READ_BURST);
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while (i < count) {
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buffer[i] = cc1100_txrx(NOBYTE);
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i++;
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}
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cc1100_spi_unselect();
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restoreIRQ(cpsr);
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}
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void
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cc1100_spi_write_reg(uint8_t addr, uint8_t value)
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{
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unsigned int cpsr = disableIRQ();
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cc1100_spi_select();
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cc1100_txrx(addr);
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cc1100_txrx(value);
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cc1100_spi_unselect();
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restoreIRQ(cpsr);
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}
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uint8_t cc1100_spi_read_reg(uint8_t addr)
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{
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uint8_t result;
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unsigned int cpsr = disableIRQ();
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cc1100_spi_select();
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cc1100_txrx(addr | CC1100_READ_SINGLE);
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result = cc1100_txrx(NOBYTE);
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cc1100_spi_unselect();
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restoreIRQ(cpsr);
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return result;
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}
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uint8_t cc1100_spi_read_status(uint8_t addr)
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{
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uint8_t result;
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unsigned int cpsr = disableIRQ();
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cc1100_spi_select();
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cc1100_txrx(addr | CC1100_READ_BURST);
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result = cc1100_txrx(NOBYTE);
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cc1100_spi_unselect();
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restoreIRQ(cpsr);
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return result;
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}
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uint8_t cc1100_spi_strobe(uint8_t c)
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{
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uint8_t result;
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unsigned int cpsr = disableIRQ();
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cc1100_spi_select();
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result = cc1100_txrx(c);
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cc1100_spi_unselect();
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restoreIRQ(cpsr);
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return result;
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}
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/** @} */
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